Boris and Arkady Strugatsky created plenty of great scifi novel, most recognized of their works is of course the Roadside Picnic that gave beginning to whole saga of video games, movies and books about the Zone. Their stories, similar to other great authors, like Stanislaw Lem or Philip K. Dick, were using the alternative of the far future or alternative reality to raise questions about our own identity or our own existences.
Sci-Fi Blog - even though science fiction started before 20th century a lot of people don't realize how vast and rich this genre really is. In United States many people associate sci fi with the Marvel comics and superhero stories, while the core of the science fiction is in the reaching for the future and exploring not only space, but also ourselves.
Wasteland - the final frontier... for logic
The Lone Detective
free online detective game